Search
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

Exterior Angle Theorem- More Knowledge!

Author:Rachel Slimovitch
Now you've formed your own observations about exterior angles. Look at the website and watch the video for more information!

Here's a website:

 Here's a website:

Here's a website:

https://www.mathsisfun.com/geometry/triangle-exterior-angle-theorem.html

Here's some practice problems.

Here's some practice problems.

Here's some practice problems.

https://www.ixl.com/math/geometry/exterior-angle-theorem

New Resources

  • Proving Triangles Similar: Multistep Transformations
  • Tangent Plane to a Sphere
  • Folding door
  • Line Through Two Points and Slope
  • Identify Opposite, Adjacent, Hypotenuse

Discover Resources

  • Langley's Angle: Stage One
  • A model of PG(2,3)
  • Four-T Puzzle
  • Pascal's Conics
  • navidad2023

Discover Topics

  • Expected Value
  • Coordinates
  • Trigonometry
  • Square
  • Rhombus
AboutPartnersHelp Centre
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2026 GeoGebra®